package test.java;

import java.util.Comparator;
import java.util.PriorityQueue;

public class test {
    public class ListNode {
      int val;
      ListNode next;
      ListNode() {}
      ListNode(int val) { this.val = val; }
      ListNode(int val, ListNode next) { this.val = val; this.next = next; }
  }

    public static void main(String[] args) {
   
    }


}
